Answer: Most likely the industrial revolution.
Explanation: The use of machines in production became more and more prevalent, eventually many factories were built in cities which caused pollution therefore making the air gross.
The civil war is most probably one of the best researched conflicts in world history. However, there is still a lot of space for discussion and speculation.
The Spanish influence improved Aztec civilisation by introducing new ideas and technologies. They shared European agricultural techniques, domestic animals, sugar cane, wheat, and more with the Aztecs. The Spanish conquest was noteworthy because it put a stop to the Aztecs' ritualized killing of human beings. This is further explained below.
<h3>The Aztecs and the Conquistadores?</h3>
Generally, The Spanish colonization of Mexico and the subsequent fall of the Aztec Empire are variously referred to as the "Conquest of Mexico" or simply "the Spanish."
In conclusion, On August 13, 1521, Cortes was able to overcome Cuauhtemoc's resistance at Tenochtitlan with the support of the Aztecs' local enemies. It is estimated that 240,000 Aztecs perished in the city's capture, marking the end of the empire.
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<span>In the United States, the second half of the 20th century brought about historical socio-political movements that revolutionized American culture. Following the end of World War II in 1945, the U.S. entered a new era, experiencing a sharp growth in population, a successful economy, and an increased standard of living.</span>
Answer:
They formed ethnic communities
Explanation:
The melting pot image of the United States directed to the concept that the U.S. is a country in which immigrants from different points of origin who have come, intermarried and intermingled in the American society. It resulted in the mixed cultural heritage of the immigrants. However, it is not a simple process and pockets of ethnic communities of immigrants' presence was sometimes interpreted as a divisive reluctance on the part of the immigrants to join the American culture.